Once you position your challenges correctly you should set them up and automate the whole delivery so you can get as many members in to each challenge as possible.
Some trainers would do it in a Facebook group, this obviously doesn't display your services, it doesn't show what you offer very well and it doesn't maximise the number of people buying your services. A Facebook group is a fantastic add on to a challenge. Facebook groups help you build community, relationships and add extra coaching.
For a challenge to be truly effective in converting members to paid clients it needs to accurately reflect the quality of your paid service.
So here's how set up and automate an online fitness challenge extremely quickly using PT Distinction.